WO2012013068A1 - Circuit de chauffage de batterie - Google Patents

Circuit de chauffage de batterie Download PDF

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Publication number
WO2012013068A1
WO2012013068A1 PCT/CN2011/074442 CN2011074442W WO2012013068A1 WO 2012013068 A1 WO2012013068 A1 WO 2012013068A1 CN 2011074442 W CN2011074442 W CN 2011074442W WO 2012013068 A1 WO2012013068 A1 WO 2012013068A1
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WO
WIPO (PCT)
Prior art keywords
switch
battery
storage element
charge storage
switch unit
Prior art date
Application number
PCT/CN2011/074442
Other languages
English (en)
Inventor
Wenhui Xu
Yaochuan Han
Wei FENG
Qinyao Yang
Wenjin Xia
Xianyin Li
Original Assignee
Byd Company Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Byd Company Limited filed Critical Byd Company Limited
Publication of WO2012013068A1 publication Critical patent/WO2012013068A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/345—Arrangements for heating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/651—Means for temperature control structurally associated with the cells characterised by parameters specified by a numeric value or mathematical formula, e.g. ratios, sizes or concentrations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6571—Resistive heaters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6572—Peltier elements or thermoelectric devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00711—Regulation of charging or discharging current or voltage with introduction of pulses during the charging process
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention pertains to electric and electronic field, in particular to a battery heating circuit.
  • the battery which serves as the power supply unit for electric motor cars or electronic devices, must be adaptive to these complex conditions.
  • the service life and charging/discharging cycle performance of battery must be considered; especially, when electric motor cars or electronic devices are used in low temperature environments, the battery must have outstanding low temperature charging/discharging performance and higher input/output power.
  • the present invention provides a battery heating circuit.
  • the object of the present invention is to provide a battery heating circuit, in order to solve the problem of decreased capacity of battery caused by increased resistance and polarization of battery under low temperature conditions.
  • the present invention provides a battery heating circuit, wherein, the battery comprises a battery El and a battery E2, the heating circuit comprises: a first charging/discharging circuit, which is connected with the battery El, and comprises a damping element Rl, a current storage element LI, a first switch unit and a charge storage element C, all of which are connected in series to each other; and a second charging/discharging circuit, which is connected to the battery E2, and comprises a damping element R2, a current storage element L2, a second switch unit and the charge storage element C, all of which are connected in series with each other.
  • the battery heating circuit provided in the present invention can be used to heat up multiple batteries simultaneously, or heat up some batteries among the multiple batteries separately by controlling the first switch unit and/or the second switch unit.
  • the battery heating circuit provided in the present invention can be used to make the batteries with electric quantity more than the average electric quantity transfer the excessive electric quantity into the charge storage element C through a charging/discharging circuit; then, the energy stored in the charge storage element C can be transfers to batteries with less electric quantity through another charging/discharging circuit, so as to attain the objective of electric quantity balance among the batteries.
  • FIG. 1 is a schematic diagram of the battery heating circuit provided in the present invention.
  • Figure 2A-2F are schematic diagrams of an embodiment of the first switch unit and/or the second switch unit shown in Figure 1 ;
  • Figure 3 is a schematic diagram of the first embodiment of the battery heating circuit provided in the present invention.
  • Figure 4A-4C are schematic diagrams of an embodiment of the polarity inversion unit shown in Figure 3;
  • Figure 4D is a schematic diagram of an embodiment of the DC-DC module shown in Figure 4C;
  • Figure 5A is a schematic diagram of the second embodiment of the battery heating circuit provided in the present invention.
  • Figure 5B is a timing sequence diagram of the waveform corresponding to the heating circuit shown in Figure 5A;
  • Figure 6A is a schematic diagram of the third embodiment of the battery heating circuit provided in the present invention.
  • Figure 6B is a timing sequence diagram of the waveform corresponding to the heating circuit shown in Figure 6 A.
  • switching control module refers to any controller that can output control commands (e.g., pulse waveform) under preset conditions or at preset times and thereby controls the switch unit connected to it to switch on or switch off accordingly, for example, the switching control module can be a PLC;
  • switch refers to a switch that achieve ON/OFF control by means of electrical signals or achieve ON/OFF control on the basis of the characteristics of the element or component, which is to say, the switch can be a one-way switch (e.g., a switch composed of a two-way switch and a diode connected in series, which can switch on in one direction) or a two-way switch (e.g., a Metal Oxide Semiconductor Field Effect Transistor (MOSFET) or an IGBT with an anti-parallel freewheeling diode); where mentioned in the following text, the term “two-way switch” refers to a
  • the "battery” refers to an ideal battery that doesn't have internal parasitic resistance and inductance or has very low internal parasitic resistance and inductance, or refers to a battery pack that has internal parasitic resistance and inductance; therefore, those skilled in the art should appreciate: if the battery is an ideal battery that doesn't have internal parasitic resistance and inductance or has very low internal parasitic resistance and inductance, the damping element Rl and R2 refer to damping elements external to the battery, and the current storage element LI and L2 refer to current storage elements external to the battery; if the battery is a battery pack that has internal parasitic resistance and inductance, the damping element Rl and R2 refer to damping elements external to the battery, or refer to the parasitic resistance in the battery pack; likewise, the current storage element LI and L2 refer to current storage elements external to the battery, or refer to the parasitic inductance in the battery pack.
  • the battery can be heated under low temperature condition, which is to say, when the heating condition is met, the heating circuit is controlled to start heating for the battery; when the heating stop condition is met, the heating circuit is controlled to stop heating.
  • the battery heating condition and heating stop condition can be set according to the actual ambient conditions, to ensure normal charging/discharging performance of the battery.
  • FIG. 1 is a schematic diagram of the battery heating circuit provided in the present invention.
  • the present invention provides a battery heating circuit, wherein, the battery comprises a battery El and a battery E2, the heating circuit comprises: a first charging/discharging circuit, which is connected with the battery El, and comprises a damping element Rl, a current storage element LI, a first switch unit 1 and a charge storage element C, all of which are connected in series to each other; and a second charging/discharging circuit, which is connected to the battery E2, and comprises a damping element R2, a current storage element L2, a second switch unit 2 and the charge storage element C, all of which are connected in series with each other.
  • a first charging/discharging circuit which is connected with the battery El, and comprises a damping element Rl, a current storage element LI, a first switch unit 1 and a charge storage element C, all of which are connected in series to each other
  • a second charging/discharging circuit which is connected to the battery E2, and comprises a
  • damping element Rl and damping element R2 can be the parasitic resistance in the battery El and battery E2 respectively; the current storage element LI and current storage element L2 can be the parasitic inductance in the battery El and battery E2 respectively.
  • the heating circuit can further comprise a switching control module 100, which is connected with the first switch unit 1 and second switch unit 2, and the switching control module 100 is configured to control ON/OFF of the first switch unit 1 and second switch unit 2, so that the energy flows to and fro between the battery El and the first charging/discharging circuit and/or flows to and fro between the battery E2 and the second charging/discharging circuit when the switch unit 1 and/or the second switch unit 2 switch(es) on, so that the damping element Rl and/or damping element R2 generate(s) heat, and thereby attain the objective of heating up the battery.
  • a switching control module 100 which is connected with the first switch unit 1 and second switch unit 2
  • the switching control module 100 is configured to control ON/OFF of the first switch unit 1 and second switch unit 2, so that the energy flows to and fro between the battery El and the first charging/discharging circuit and/or flows to and fro between the battery E2 and the second charging/discharging circuit when the switch unit 1 and/or the second switch unit 2 switch
  • the switching control module 100 can be a separate controller, which, by means of internal program setting, achieves ON/OFF control of different external switches; or, the switching control module 100 can be a plurality of controllers, for example, a switching control module 100 can be set for each external switch; or, the plurality of switching control modules 100 can be integrated into an assembly.
  • the present invention doesn't define any limitation to the form of implementation of the switching control module 100.
  • the switching control module 100 is configured to control the first switch unit 1 to switch on and control the second switch unit 2 to switch off so that the battery El charges the charge storage element C, when the electric quantity in the battery El is more than the electric quantity in the battery E2; then, control the first switch unit 1 to switch off and control the second switch unit 2 to switch on, so that the charge storage element C charges the electric quantity stored in it into the battery E2, when the current flowing through the first charging/discharging circuit reaches to zero after the positive half cycle, so as to achieve the objective of energy balance between the batteries.
  • FIGS. 2A-2F are schematic diagrams of embodiments of the first switch unit and/or the second switch unit shown in Figure 1.
  • the embodiments of the first switch unit and/or second switch unit will be detailed, with reference to Figure 2A-2F.
  • the first switch unit 1 and/or second switch unit 2 can be two-way switches K3, as shown in Figure 2A.
  • the switching control module 100 controls ON/OFF of the two-way switch K3; when the battery is to be heat up, the two-way switch K3 can be controlled to switch on; if heating is to be paused or is not required, the two-way switch K3 can be controlled to switch off.
  • the switch unit 1 and/or second switch unit 2 can comprise a first one-way branch configured to implement energy flow from the battery to the charging/discharging circuit, and a second one-way branch configured to implement energy flow from the charging/discharging circuit to the battery; wherein, the switching control module 100 is connected to either or both of the first one-way branch and second one-way branch, to control ON/OFF the connected branches.
  • both the first one-way branch and the second oneway branch can be controlled to switch on; when heating is to be paused, either or both of the first one-way branch and the second one-way branch can be controlled to switch off; when heating is not required, both of the first one-way branch and the second one-way branch can be controlled to switch off.
  • both of the first one-way branch and the second one-way branch are subject to the control of the switching control module 100; thus, energy flow in forward direction and reverse direction can be implemented flexibly.
  • the first switch unit 1 and/or second switch unit 2 can comprise a two-way switch K4 and a two-way switch K5, wherein, the two-way switch K4 and two-way switch K5 are connected in series opposite to each other, to form the first one-way branch and the second one-way branch; the switching control module 100 is connected with the two-way switch K4 and the two-way switch K5 respectively, to control ON/OFF of the first one-way branch and second one-way branch by controlling ON/OFF of the two-way switch K4 and two-way switch K5.
  • the two-way switches K4 and K5 can be controlled to switch on; when heating is to be paused, either or both of the two-way switch K4 and two- way switch K5 can be controlled to switch off; when heating is not required, both of the two-way switch K4 and two-way switch K5 can be controlled to switch off.
  • the first one-way branch and the second one-way branch can be controlled separately to switch on or off, and therefore energy flow in forward direction and reverse direction in the circuit can be implemented flexibly.
  • the first switch unit 1 and/or second switch unit 2 can comprise a switch K6, a one-way semiconductor element Dll and a one-way semiconductor element D12, wherein, the switch K6 and the one-way semiconductor element Dll are connected in series with each other to form the first oneway branch; the one-way semiconductor element D12 forms the second one-way branch; the switching control module 100 is connected with the switch K6, to control ON/OFF of the first one-way branch by controlling ON/OFF of the switch K6.
  • the switch K6 when heating is required, the switch K6 can be controlled to switch on; when heating is not required, the switch K6 can be controlled to switch off.
  • switch units shown in Figure 2C implements to-and-fro energy flow along separate branches, it can't implement energy flow cut-off function in reverse direction.
  • the present invention further puts forward another embodiment of switch units, as shown in Figure 2D, the first switch unit 1 and/or second switch unit 2 can further comprise a switch K7 in the second one-way branch, wherein, the switch K7 is connected with the one-way semiconductor element D12 in series, the switching control module 100 is also connected with the switch K7, and the switching control module 100 is configured to control ON/OFF of the second one-way branch by controlling ON/OFF of the switch K7.
  • switches i.e., switch K6 and switch K7
  • the first switch unit 1 and/or second switch unit 2 can further comprise a resistor connected with the first one-way branch and/or second one-way branch, to reduce the current in the charging/discharging circuit, so as to avoid damage to the batteries due to over-current.
  • a resistor R6 connected in series with the two-way switch K4 and two-way switch K5 can be added in the switch units shown in Figure 2B, to obtain another implementation of the switch units, as shown in Figure 2E.
  • Figure 2F shows an embodiment of the switch units, which is obtained by connecting resistor R3 and resistor R4 in series in the two one-way branches in the switch units shown in Figure 2D, respectively.
  • the switch unit can be switched off at any point of time in one or more cycles, which is to say, the switch unit can be switched off at any time, for example, the switch unit can be switched off when the current flows through the switch unit in forward direction or reverse direction, and is equal to zero or not equal to zero.
  • a specific implementation form of switch unit can be selected, depending on the required cut-off strategy; if only current flow cut-off in forward direction is required, the implementation form of switch unit shown in Figure 2A or Figure 2C can be selected; if current flow cut-off in forward direction and reverse direction is required, the switch unit with two controllable one-way branches shown in Figure 2B or Figure 2D can be selected.
  • FIG 3 is a schematic diagram of an embodiment of the battery heating circuit provided in the present invention.
  • the heating circuit provided in the present invention can further comprise a polarity inversion unit 101, which is connected with the charge storage element C, and the polarity inversion unit 101 is configured to invert the voltage polarity of the charge storage element C.
  • the switching control module 100 is connected with the first switch unit 1, second switch unit 2 and polarity inversion unit 101, and is configured to control the first switch unit 1 and/or the second switch unit 2 to switch off when the current flowing through the first charging/discharging circuit and/or the second charging/discharging circuit reaches to zero after the negative half cycle, and then control the polarity inversion unit 101 to invert the voltage polarity of the charge storage element C.
  • FIGS. 4A-4C are schematic diagrams of an embodiment of the polarity inversion unit shown in Figure 3.
  • the embodiments of the polarity inversion unit 101 will be detailed, with reference to Figure 4A- Figure 4C.
  • the polarity inversion unit 101 comprises a single pole double throw switch Jl and a single pole double throw switch J2, wherein, the single pole double throw switch Jl is arranged at one end of the charge storage element C and the single pole double throw switch J2 is arranged at the other end of the charge storage element C; the input wire of the single pole double throw switch Jl is connected in the first and second charging/discharging circuits, the first output wire of the single pole double throw switch Jl is connected to the first pole plate of the charge storage element C, and the second output wire of the single pole double throw switch Jl is connected to the second pole plate of the charge storage element C; the input wire of the single pole double throw switch J2 is connected in the first and second charging/discharging circuits, the first output wire of the single pole double throw switch J2 is connected to the second pole plate of the charge storage element C, and the second output wire of the single pole double throw switch J2 is connected to the first pole plate of the charge storage element C;
  • connection relationships between the respective input wire and output wires of the single pole double throw switch Jl and single pole double throw switch J2 can be set in advance, so that the input wire of the single pole double throw switch Jl is connected with the first output wire of the single pole double throw switch Jl, while the input wire of the single pole double throw switch J2 is connected with the first output wire of the single pole double throw switch J2.
  • the input wire of the single pole double throw switch Jl can be switched to connect with the second output wire of the single pole double throw switch Jl, while the input wire of the single pole double throw switch J2 is switched to connect to the second output wire of the single pole double throw switch J2, under control of the switching control module 100, when the first switch unit 1 and second switch unit 2 switch off, so as to attain the objective of voltage polarity inversion of the charge storage element C.
  • the polarity inversion unit 101 comprises a one-way semiconductor element D3, a current storage element L3 and a switch K9, all of which are connected in series with each other, and the series circuit is connected in parallel between the ends of the charge storage element C; the switching control module 100 is also connected with the switch K9, and is configured to invert the voltage polarity of the charge storage element C by controlling the switch K9 to switch on.
  • the switch K9 can be controlled by the switching control module 100 to switch on, and thereby the charge storage element C, one-way semiconductor element D3, current storage element L3 and switch K9 form a LC oscillation circuit, and the charge storage element C discharges via the current storage element L3; when the current flowing through the current storage element L3 reaches to zero after the negative half cycle of current flowing through the oscillation circuit, the voltage polarity of the charge storage element C will be inverted.
  • the polarity inversion unit 101 comprises a DC-DC module 102 and a charge storage element CI, wherein, the DC-DC module 102 is connected in series with the charge storage element C and the charge storage element CI respectively; the switching control module 100 is also connected with the DC-DC module 102, and is configured to transfer the energy in the charge storage element C to the charge storage element CI and then transfer back the energy in the charge storage element CI to the charge storage element C by controlling the DC-DC module 102 to operate, so as to invert the voltage polarity of the charge storage element C.
  • the DC-DC module 102 is a DC-DC conversion circuit for voltage polarity inversion commonly used in the field.
  • the present invention doesn't define any limitation to the specific circuit structure of the DC-DC module 102, as long as the module can accomplish voltage polarity inversion of the charge storage element C. Those skilled in the art can add, replace, or delete the elements in the circuit as required.
  • FIG. 4D is a schematic diagram of an embodiment of the DC-DC module 102 provided in the present invention.
  • the DC-DC module 102 comprises: a two-way switch Ql, a two-way switch Q2, a two-way switch Q3, a two-way switch Q4, a first transformer Tl, a one-way semiconductor element D4, a one-way semiconductor element D5, a current storage element L4, a two-way switch Q5, a two-way switch Q6, a second transformer T2, a one-way semiconductor element D6, a one-way semiconductor element D7 and a one-way semiconductor element D8.
  • the two-way switch Ql, two-way switch Q2, two-way switch Q3 and two-way switch Q4 are MOSFETs; the two-way switch Q5 and two-way switch Q6 are IGBTs.
  • the Pin 1, 4 and 5 of the first transformer Tl are dotted terminals; the pin 2 and 3 of the second transformer T2 are dotted terminals.
  • the positive electrode of the one-way semiconductor element D7 is connected with the end 'a' of the charge storage element CI
  • the negative electrode of the one-way semiconductor element D7 is connected with the drain electrode of the two-way switch Ql and two-way switch Q2, respectively
  • the source electrode of the two-way switch Ql is connected with the drain electrode of the two-way switch Q3, and the source electrode of the two-way switch Q2 is connected with the drain electrode of the two-way switch Q4
  • the source electrodes of the two-way switch Q3 and two-way switch Q4 are connected with the end 'b' of the charge storage element CI respectively; thus, a full-bridge circuit is formed; here, the voltage polarity of the charge storage element CI is: end 'a' is positive, while end 'b' is negative.
  • the two-way switch Ql and two-way switch Q2 constitute the upper bridge arm, while the two-way switch Q3 and two-way switch Q4 constitute the lower bridge arm.
  • the full-bridge circuit is connected with the charge storage element CI via the first transformer Tl; the pin 1 of the first transformer Tl is connected with the first node Nl, the pin 2 of the transformer Tl is connected with the second node N2, the pin 3 and pin 5 of the transformer Tl are connected to the positive electrode of the one-way semiconductor element D4 and the positive electrode of the one-way semiconductor element D5, respectively; the negative electrode of one-way semiconductor element D4 and the negative electrode of one-way semiconductor element D5 are connected with one end of the current storage element L4, and the other end of the current storage element L4 is connected with the end 'd' of the charge storage element CI; the pin 4 of the transformer Tl is connected with the end 'c' of the charge storage element CI, the positive electrode of the one-way semiconductor element D8 is connected with the end 'd'
  • the end 'c' of the charge storage element CI is connected with the emitter electrode of the two-way switch Q5, the collector electrode of the two-way switch Q5 is connected with the pin 2 of the transformer T2, the pin 1 of the transformer T2 is connected with end 'a' of the charge storage element C, the pin 4 of the transformer T2 is connected with end 'a' of the charge storage element C, the pin 3 of the transformer T2 is connected with the positive electrode of the one-way semiconductor element D6, the negative electrode of the one-way semiconductor element D6 is connected with the collector electrode of the two-way switch Q6, and the emitter electrode of the two-way switch Q6 is connected with the end 'b' of the charge storage element CI.
  • the two-way switch Ql, two-way switch Q2, two-way switch Q3, two-way switch Q4, two-way switch Q5 and two-way switch Q6 are controlled by the switching control module 100 respectively to switch on and switch off.
  • the switching control module 100 controls the two-way switch Q5 and two-way switch Q6 to switch off, and control the two-way switch Ql and two-way switch Q4 to switch on at the same time, to form phase A; control the two-way switch Q2 and two-way switch Q3 to switch on at the same time, to form phase B; by controlling the phase A and phase B to switch on in alternate, a full-bridge circuit is formed;
  • the switching control module 100 controls the two-way switch Q5 to gate on, and therefore a path from the charge storage element CI to the charge storage element C is formed via the second transformer T2 and the one-way semiconductor element D8; thus, the energy in the charge storage element CI is transferred back to the charge storage element C, wherein, some energy will be stored in the second transformer T2; now, the switching control module 100 controls the two-way switch Q5 to gate off and controls the two-way switch Q6 to gate on, and therefore the energy stored in the second transformer T2 is transferred to the charge storage element C via the second transformer T2 and the one-way semiconductor element D6; now, the voltage polarity of the charge storage element C is inverted to: end 'a' is negative, while end 'b' is positive. Thus, the objective of inverting the voltage polarity of the charge storage element C is attained.
  • FIG. 5A is a schematic diagram of the second embodiment of the battery heating circuit provided in the present invention.
  • the first switch unit 1 is switch Kla
  • the second switch unit 2 is switch Klb
  • the polarity inversion unit 101 comprises one-way semiconductor element D3, switch K9 and current storage element L3, which are connected in series with each other, and the series circuit is connected in parallel between the ends of the charge storage element C, so as to invert the voltage polarity of the charge storage element C.
  • FIG. 5B is a timing sequence diagram of the waveform corresponding to the heating circuit shown in Figure 5A.
  • the switching control module 100 controls the switch Kla and switch Klb to switch on, and controls the switch K9 to switch off.
  • the battery El and battery E2 charges the charge storage element C simultaneously (see time period tl); when the current I E1 flowing through the battery El and the current I E2 flowing through the battery E2 reach to zero after the positive half cycle, the voltage Vc across the charge storage element reaches to the peak value, and the charge storage element C starts to charge back the energy stored in it to the battery El and battery E2, and the back-charge ends when the current I E1 and current I E2 reach to zero after the negative half cycle (see time period t2); then, the switching control module 100 controls the switch Kla and switch Klb to switch off, and controls the switch K9 to switch on; now, the polarity inversion unit 101 starts to invert the voltage polarity of the charge storage element C, and the polarity inversion ends when the current I c flowing through the charge storage element C reaches to zero after the negative half cycle (see time period t3, at this point, a complete working cycle T has just finished); then, the switching control module 100 controls the switch K9 to switch off.
  • FIG 5B shows the case that the battery El and battery E2 are heated up simultaneously.
  • the first switch unit 1 and second switch unit 2 can be controlled as required, so as to heat up either battery separately.
  • the switch-off control of switch Kla and switch Klb can be conducted within the grid section shown in Figure 5B.
  • FIG. 6A is a schematic diagram of a third embodiment of the battery heating circuit provided in the present invention.
  • the first switch unit 1 comprises a first one-way branch composed of a switch K6a and a one-way semiconductor element Dlla connected in series and a second one-way branch composed of a switch K7a and a one-way semiconductor element D12a connected in series; the first one-way branch and second one-way branch are connected in parallel opposite to each other.
  • the second switch unit 2 comprises a first one-way branch composed of a switch K6b and a one-way semiconductor element Dllb connected in series and a second one-way branch composed of a switch K7b and a one-way semiconductor element D12b connected in series; the first one-way branch and second one-way branch are connected in parallel opposite to each other.
  • the polarity inversion unit 101 comprises a one-way semiconductor element D3, a switch K9 and a current storage element L3, which are connected in series with each other, and the series circuit is connected in parallel between the ends of the charge storage element C, so as to invert the voltage polarity of the charge storage element C.
  • FIG. 6B is a timing sequence diagram of the waveform corresponding to the heating circuit shown in Figure 6A.
  • the switching control module 100 controls the switch K6a to switch on, and controls the switch K7b, switch K9, switch K7a and switch K7b to switch off.
  • the battery E2 charges the charge storage element C (see time period tl); when the current I E2 flowing through the battery E2 reaches to zero after the positive half cycle, the switching control module 100 controls the switch K6a to switch off and controls the switch K7b to switch on, so that the charge storage element C starts to charge back the energy stored in it to the battery El, and the back-charge ends when the current I EI flowing through the battery El reaches to zero after the negative half cycle (see time period t2); then, the switching control module 100 controls the switch K6a and switch K7b to switch off, and controls the switch K9 to switch on, so that the polarity inversion unit 101 starts to invert the voltage polarity of the charge storage element C, and the polarity inversion ends when the current Ic flowing through the charge storage element C reaches to zero after the negative half cycle (see time period t3, at this point, a complete working cycle T has just finished); then, the switching control module 100 controls the switch K9 to switch off.
  • the objective of heating up the battery can be attained when the battery returns the energy to itself; the objective of heating up the battery and an energy balance function can be attained when the battery returns the energy to itself and transfer partial energy to other batteries.
  • a specific heating circuit for battery El and battery E2 is only described here, virtually the battery heating circuit provided in the present invention can be extended to serve for multiple batteries, and can heat up all the batteries simultaneously, or heat up one or more batteries among the batteries separately, and achieve electric quantity balance among the batteries.
  • the durations of the time periods are adjustable, so as to control the effective current values of the batteries.

Abstract

La présente invention concerne un circuit de chauffage de batterie, la batterie comprenant une batterie E1 et une batterie E2, le circuit de chauffage comprenant un premier circuit de charge/de décharge connecté à la batterie E1, et comprenant un élément d'amortissement R1, un élément de stockage de courant L1, une première unité de commutation (1) et un élément de stockage de charge C, tous étant connectés en série les uns aux autres; et un second circuit de charge/de décharge connecté à la batterie E2, et comprenant un élément d'amortissement R2, un élément de stockage de courant L2, une seconde unité de commutation (2) et l'élément de stockage de charge C, tous étant connectés en série les uns aux autres. L'unité de chauffage de batterie selon la présente invention peut être appliquée à de multiples batteries, et peut être utilisée pour chauffer de multiples batteries ensemble ou séparément, et permettre un équilibre de quantité électrique parmi les batteries.
PCT/CN2011/074442 2010-07-30 2011-05-20 Circuit de chauffage de batterie WO2012013068A1 (fr)

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CN201010245288.0 2010-07-30
CN201010245288 2010-07-30
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CN201010274785.3 2010-08-30

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PCT/CN2011/074461 WO2012013077A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
PCT/CN2011/074457 WO2012013073A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
PCT/CN2011/074462 WO2012013078A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
PCT/CN2011/074460 WO2012013076A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
PCT/CN2011/074442 WO2012013068A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
PCT/CN2011/074449 WO2012013069A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
PCT/CN2011/074458 WO2012013074A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
PCT/CN2011/074459 WO2012013075A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
PCT/CN2011/074438 WO2012013066A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
PCT/CN2011/074455 WO2012013071A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
PCT/CN2011/074453 WO2012013070A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
PCT/CN2011/074463 WO2012013079A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
PCT/CN2011/074536 WO2012013082A1 (fr) 2010-07-30 2011-05-23 Circuit de chauffage de batterie
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PCT/CN2011/074461 WO2012013077A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
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PCT/CN2011/074459 WO2012013075A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
PCT/CN2011/074438 WO2012013066A1 (fr) 2010-07-30 2011-05-20 Circuit de chauffage de batterie
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